Bench-clamp.



O. E. HOSKIN.

BENCH CLAMP.

APPLICATION ruso MAY 24. 1916.

1,2593%. Patented Mar; 19, 1918.-

WITNESSES j MM- BY I i v I 0mm ATTORNEY INVENTOR one E. HOSKIN, orrnsnnnne, CALIFORNIA.

BENCH-CLAMP.

To all whom it maycomernz Be it known that I, ORA E. HOSKIN, a citizen of the United States, residing at Pasadena, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Bench Clamps, of which the following-is a specification.

This invention relates to work supporting clamps and more particularly to a bench clamp.

' The invention has more especial reference to a clamp which may be applied to the usual work bench without material alteration thereto, and has for its primary object, the provision of a-clamp, whereby various work may be supported thereupon and securely held in a desired position for the convenience of the user.

The invention also contemplates the provision of a device of the character stated, wherein a screw threaded shank member is provided and .is adapted to, when rotated, move the clamp laterally so that the work may be supported and secured thereby.

In the present construction, it is one of the aims and objects to simplify and reduce the cost of manufacture of constructions of this design and provide novel details in the construction and arrangement of parts with a view to higher efliciency generally.

Theimprovements in the details'and arrangement of parts may be apparent from-an inspection of the accompanying drawings, in connection with the specific construction hereinafter contained, and wherein the preferred embodiment of the invention is disclosedfor the purpose of imparting a full understanding of the present improvements.

In the drawings:

Figure 1 is a side elevation partly in section showing my improved device as applied to a portion ofa work bench;

Fig. .2 is a front elevation of the clamp supporting element; and

Fig.3 is a fragmental detail in perspective of the work supporting and clamping member.

Referring now particularly to the drawings, wherein like reference numerals designate corresponding parts throughout the several views, theordinary work bench as used in wood workingis. employed as a supporting means for .my. improved clamp. .A

pe i i n of L t ers I Patented Mar. 19, 1918.

Application filed May 24, 1916. Serial No. 99,600,

portion of one of the work benches, as used in conjunction with the present device, is indicated by the numeral 1.

In order that the clamp may be attached to the bench, an opening 2 is arranged in one of the side portionsthereof into which openings is introduced a supporting ele ment, designated in its entirety as at 3. This supporting element 3, to be inserted through the opening 2, must, of course, be inserted endwise thereinto and then, when in the desired position, moved into the opening'to a position as shown by theFig. 1, and y time the work supporting member is carried at quite a distance beyond the forward surface of the supporting element would cause the weight of the outer end of ti e screw threaded shank together with the circular head thereof and the weight of the forward end of the work supporting member would constitute a fulcrum like action which would further hold the supporting element in a vertical plane. It should also be noted that by positioning the wedging block 2" in the opening, a flat inner and outer surface will be provided upon the work bench against. which the material gripped by the vise may be brought to bear. It is also obvious the spurs upon the arms will assist-in holding the supporting element against shifting. The supporting element 3 comprises what may be termed a body portion or block 4, the said block being provided with a transversely disposed interiorly threaded bore 5, for a purpose as will be sub sequently apparent. A second opening 6 is arranged in the block and is so positioned as to be in proximity to the interiorly threaded bore, the same being substantially rectangular in cross section. Engaging arms 7 and 8 are arranged upon the opposite sides of the body portion 4, the former being of greater thickness and having arrangedthereupon, spurs 9, whereby the same may be positively engaged with the adjacent portionof the workbench, thus, preventing further movement thereof. The engaging arm 8 is formed upon the lower outer face of the body 4 and isso arranged as to be offset therefrom, thereby permitting the same to be engaged with the opposite face of the adjacent portion of the work bench. Spurs are also arranged upon the contacting face of the arm S, for a purpose as heretofore described. It will be obvious, that when the supporting element has. been inserted through the opening 2, lateral movement thereof will be prevented by the peculiar formation of the body portion 4, which snugly received by the opening 2 and further, by reason of the spurs 9 and 10 as arranged upon the receiving arms 7 and 8. Due to the arrangement of the engaging arms 7 and 8, longitudinal movement of the block will also be prevented.

member consisting of a laterally extended A. work receiving and supporting member, having an elongated flattened leg portion 11 and a head portion 12 is receivable by the opening 6, in such a manner as to permit sliding movement thereof. The head portion 12 has arranged thereupon a guide member or housing 13, the under surface of which is concaved as at 14, this side arm. The lower extremity of the head portion 12 is concaved as shown at 15, the pur pose of which shall be now described.

A screw threaded shank 16 is engageable -wvith the interiorly threaded bore 5 and has arranged upon one end thereof, a circular head 17, which head carries an operating seat 18, whereby the shank 16 may be turned into engagement with the said interiorly threaded bore. In normal position,

the circular head 17 is engaged with the head portion 12, while the adjacent portion of the Screw threaded shank 16 is received by the concaved portion 15, formed in the lower extremity of the head portion. The guide member is consequently, also engaged with the circular head 17 and more specifically, engages the periphery thereof, by reason of the concaved lower face 14. In reviewing the operation of the device and assuming that the various constituent 'elements have been assembled, aboard or other object is placed upon the support 11. The

operating seat 18 is then turned, which motion, causes the screw threaded shank 16 to be engaged with the complemental screw threaded bore 5, as arranged in the body portion 4 and thereby, causes the said shank to be advanced thereinto. Upon continued ,rotation of the shank portion '16, the cirported bythe opening or way 6, as arran edcular head 17, due to its engagement with the head portion 12, will carry the supporting member inwardly, the opposite-extremity of said supporting member being supin the'body portion 4:. The guide mom or 18' provides means whereby the adjacent extremity of the supporting member'may be supported, the same being transmitted to the circular head portion 17 of the screw thread- I ed shank 16. To'release the work'as clamped by the device, it is only necessary that the shank portion l6-be turned in anopposite direction thus retractin the same and c the screw threaded shank 16, as adjacent the 7 circular head 17 thereof. 7

Should it be desired, the operating member 18 may be replaced by a crank mem-; ber, whereby rotation of the screw threaded shank 16 may be expedited.

While I have herein disclosed a specific I embodiment of the invention, it will be apparent to persons skilled'in the art, that the invention is capable of embodiment in other forms and devices difiering in detail and" arrangement from that shown, as may be in keeping with the hereto appended claims.-

' Having thus described the invention, what is claimed is V 1. In a device of the class described, the combination of a supporting element com.- prising a body having at each end an arm, said arms extending in opposite directions, thus allowing the body to be positioned upon a support, at which time said arms will engage the opposite surfaces of the support for retaining the body in acorrect position, said body havlng a threaded bore extending therethrough, said body also having a flat opening formed therethrough parallel to said threaded bore, a screw threaded shank passing through said threaded bore, means. for rotating said screw thread ed shank, a work supporting element mounted upon said screw threaded shank and projecting through said opening,- whereby as said shank is moved said Work supporting member will be moved on said body.

2. In a device of the class described, the V comblnatlon of a supportmgelement' cone stituting a body having at each end an arm,

said .arms extending in opposite directions, said body being adapted to be positioned upon a support at which time saidarms will engage the oppositev side of the support for holding said body in a correct position, saidbody having a threaded bore projecting therethrough, said body also having a rectangular opening extending therethrough, a screw threaded shank projecting through said screw threaded bore, said shank having a circular head upon its outer end, awork supporting member comprising an elongated flat portion provided with a vertical head at its'outer endfsaid' head having a guide i portion extending at right anglesthereto, J sald guide portionshavlng a concaved under surface, the lowerend of saidhead being concave and bearing upon said screw threadwork supporting member to be moved with 10 ed shank, said circular head bearing upon respect to said body.

the concaved portion of said guide, Where- In testimony whereof I aflix my signature by as said screw threaded shank is rotated, in presence of two Witnesses.

g said circular head Will bear upon the head ORA E HOSKIN of said Work supporting member for urging the same inwardly, at Which time said \Vitnesses:

elongated flat portion Will pass through EDWARD H. MUNsoN, said rectangular opening, thus causing said FRED W. VVEs'r.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

